/*
 * This file is Copyright 2002-2006 Loyola University Chicago,
 * Department of Computer Science and the Emerging Technologies Laboratory.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License via
 *    http://www.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.citep.web.gwt.validators;

import java.util.Date;

/*
 * Validates that a widget has a correctly formated date value, to be used within the date class
 */
public class DateValidator extends Validator {
	
	public DateValidator(ErrorListener e) {
		super(e);
	}
	
	public DateValidator(ErrorListener e, String msg) {
		super(e,msg);
	}
	
	public boolean isValid() {
		String val = getWidgetValue();
	
		
		//if there is nothing to validate, return true. If the user wants this field to be required,
		//s/he should use a RequiredValidator first
		if(val.length() < 1)
			return true;
		
		try {
			Date d = new Date(val);
			return true;
		} catch (IllegalArgumentException e) {
			return false;
		}
		
	}
}
